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868820208748 = 22514756417481
BaseRepresentation
bin11001010010010011011…
…10000100110001101100
310002001120120111120111221
430221021232010301230
5103213320433134443
61503044104153124
7116525113632022
oct14511156046154
93061516446457
10868820208748
113055123a3178
121204721687a4
1363c10b56c9b
14300a03cc712
1517900059eed
hexca49b84c6c

868820208748 has 24 divisors (see below), whose sum is σ = 1521203667984. Its totient is φ = 434190662400.

The previous prime is 868820208743. The next prime is 868820208749. The reversal of 868820208748 is 847802028868.

It is not an unprimeable number, because it can be changed into a prime (868820208743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116133168 + ... + 116140648.

It is an arithmetic number, because the mean of its divisors is an integer number (63383486166).

Almost surely, 2868820208748 is an apocalyptic number.

It is an amenable number.

868820208748 is a deficient number, since it is larger than the sum of its proper divisors (652383459236).

868820208748 is a wasteful number, since it uses less digits than its factorization.

868820208748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18273 (or 18271 counting only the distinct ones).

The product of its (nonzero) digits is 22020096, while the sum is 61.

The spelling of 868820208748 in words is "eight hundred sixty-eight billion, eight hundred twenty million, two hundred eight thousand, seven hundred forty-eight".

Divisors: 1 2 4 5147 5641 7481 10294 11282 14962 20588 22564 29924 29034227 38504707 42200321 58068454 77009414 84400642 116136908 154018828 168801284 217205052187 434410104374 868820208748